1) Endocrine disruptor 2) Oxidizing agent 3) Salt 
== Production and use== Perchlorate salts are produced industrially by the oxidation of solutions of sodium chlorate by electrolysis. This method is used to prepare sodium perchlorate. Four perchlorates are of primary commercial interest: ammonium perchlorate (NH4ClO4), perchloric acid (HClO4), potassium perchlorate (KClO4), and sodium perchlorate...
• (n.) A salt of perchloric acid.
(from the article `explosive`) Interest in the chlorates and perchlorates (salts of chloric or perchloric acid) as a base for explosives dates back to 1788. They were mixed with ... ...as a propellant in guns and rockets until the 20th century, when double-base gunpowder (40 percent nitroglycerin, 60 percent nitrocellulose) came ... ...
Per·chlo'rate noun (Chemistry) A salt of perchloric acid. 
Perchlorate: A chemical used as the primary ingredient of solid rocket propellant and in munitions beginning in the 1950s. Perchlorate is also used in the production of explosives and fireworks. It adds the blue color to firework displays. Perchlorate remains in use and is unregulated. For disposal, perchlorate has often been dissolved in water and...
[n] - a salt of perchloric acid
noun a salt of perchloric acid